Sorting device for sorting according to mineral density

Abstract

The present invention provides a sorting device for sorting according to mineral density, including a shell, a sorting slot in a cavity of the shell, a rotary drive device connected to a rotating disk to drive the rotating disk to rotate, the sorting slot having a sorting ring slot, a vibration device connected to the sorting slot to drive the sorting slot to vibrate, the rotating disk is placed in the sorting slot, a mineral distribution slot is constructed on the rotating disk, and the mineral distribution slot has a mineral feed port corresponding to the sorting ring slot, and also includes a clean water input pipeline, through which clean water can be input into the sorting ring slot to adjust the solid-liquid ratio of the solid-liquid two-phase system in the sorting ring slot space. The present invention realizes the creation of a composite force field environment for the solid-liquid two-phase system, and under the action of the composite force, difficult-to-select minerals with very small density differences can be separated and sorted according to the density difference, and finally the purpose of separating the wide particle size and large thickness of the mineral according to the density is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of gravity mineral separation, and in particular relates to a separation device for separation according to mineral density. Background Art

[0002] Gravity separation (re-selection) refers to a separation method that uses the density difference between the mineral particles to separate them. Compared with other separation methods, re-selection has the advantages of large processing capacity, wide separation size range, simple equipment structure, no consumption of precious production materials, and low production cost. It is an indispensable green separation technology in the mineral separation industry and is widely used in the separation of metal ores, non-metallic ores and coal. With the trend of mineral resources becoming increasingly "poor, fine, complex and difficult", re-selection is developing in the direction of composite force field, high separation index, large particle size width and thick layer separation, which meets the needs of production and society. In particular, the realization of thick layer separation is the focus of re-selection technology.

[0003] It can be seen that there is currently no technology that can achieve density separation of wide-size and thick-layer minerals. There are only various types of narrow-size shallow-layer (flow film) sorting equipment. Deep-layer sorting has always been desired in the field of gravity separation. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to provide a sorting device for sorting according to mineral density, so as to create a composite force field environment for the solid-liquid two-phase system, and under the action of the composite force, difficult-to-select minerals with very small density differences can be separated and sorted according to the density differences, ultimately achieving the purpose of separating minerals with wide particle sizes and large thicknesses according to density.

[0005] In order to solve the above problems, the present invention provides a sorting device for sorting according to mineral density, comprising an outer shell, a sorting trough, a rotating disk, a rotating drive device, and a vibration device. The sorting trough is located in the cavity of the outer shell, and the rotating drive device is connected to the rotating disk to drive the rotating disk to rotate. The sorting trough has a sorting ring groove, and the vibration device is connected to the sorting trough to drive the sorting trough to vibrate. The rotating disk is placed in the sorting trough, and a mineral distribution trough is constructed on the rotating disk, and the mineral distribution trough has a mineral feeding port corresponding to the sorting ring groove. It also includes a clean water input pipeline, through which clean water can be input into the sorting ring groove to adjust the solid-liquid ratio of the solid-liquid two-phase system in the sorting ring groove space.

[0006] Optionally, the vibration frequency generated by the vibration device is between 100 times / minute and 2000 times / minute; and / or the vibration amplitude generated by the vibration device is between 0.5mm and 50mm.

[0007] Optionally, the vibration mode of the vibration device is vertical vibration and / or horizontal vibration.

[0008] Optionally, the depth of the sorting annular groove is H, 50mm≤H≤500mm; and / or the outer edge diameter of the sorting annular groove is D, 1m≤D≤8m.

[0009] Optionally, a scraping structure is provided on the bottom surface of the rotating disk facing the sorting trough, and the scraping structure is in contact with the bottom surface of the sorting trough. When the rotating disk rotates, the scraping structure can transport the heavy products in the minerals in the sorting ring groove radially inward along the sorting trough and discharge them through the heavy product discharge port located in the central area of ​​the sorting trough.

[0010] Optionally, a light product discharge port is provided on the outer peripheral wall of the sorting ring groove. When the liquid level in the sorting ring groove reaches a preset water level and the rotating disk rotates, the light products in the mineral flow radially outward along the sorting groove and are discharged through the light product discharge port.

[0011] Optionally, a plurality of concentrically arranged annular walls are provided between the side surface and the scraper structure, and a plurality of flow holes are provided on the annular walls that penetrate the radial thickness thereof; and / or, the scraper structure includes a plurality of scrapers, and the scrapers are guided and extended in a spiral shape from the edge of the rotating disk toward the center.

[0012] Optionally, a support mounting shell is further connected to the outer shell, and the support mounting shell is covered on the upper part of the rotating disk, and the light product discharge port is formed between the support mounting shell and the circumferential edge of the sorting tank.

[0013] Optionally, the mineral distribution trough is an annular structure, which is arranged around the rotation axis of the rotating disk, and there are multiple mineral inlets, which are evenly spaced and arranged around the rotation axis of the rotating disk; and / or, a clean water annular groove is also constructed on the rotating disk.

[0014] Optionally, a mineral feeding pipeline and the clean water input pipeline are fixedly connected to the supporting mounting shell, the mineral distribution trough is located on the discharge path of the mineral feeding pipeline, and the clean water annular groove is located on the water outlet path of the clean water input pipeline.

[0015] The present invention provides a sorting device for sorting according to mineral density. The vibration device is used to vibrate the sorting ring groove on the sorting tank to achieve its vibration, and the rotational movement of the rotating drive device is combined to finally create a composite force field environment for the solid-liquid two-phase system. The composite force field includes gravity, buoyancy, pressure gradient force, velocity gradient force, Saffman force, Basset force, Bagnold shear force and other forces. Under the action of this composite force, the sorting device for sorting according to mineral density of the present invention can separate and sort difficult-to-select minerals with very small density differences according to density differences, and finally achieve the purpose of separating wide particle sizes and large thicknesses of minerals according to density. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the internal structure of a separation device for separation according to mineral density according to an embodiment of the present invention;

[0017] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0018] Figure 3 for Figure 1 A front view of

[0019] Figure 4 for Figure 1 Schematic diagram of the three-dimensional structure;

[0020] Figure 5 for Figure 1 A bottom view of the rotating disk in FIG. 1 shows a scraper arrangement;

[0021] Figure 6 for Figure 1 A three-dimensional structural diagram of another embodiment of the rotating disk in FIG. 1 , on which only a mineral feed groove is constructed, and the clean water ring groove is replaced by other types not shown;

[0022] Figure 7 for Figure 6 Schematic diagram of the internal structure.

[0023] The reference numerals are:

[0024] 1. Shell; 11. Mineral feeding pipeline; 12. Clean water input pipeline; 13. Upper cylinder; 14. Lower cylinder; 141. Heavy product discharge channel; 142. Light product discharge channel; 143. Maintenance baffle; 15. Cover plate; 16. Mineral feed box; 2. Sorting trough; 21. Sorting ring groove; 23. Heavy product discharge port; 24. Light product discharge port; 25. Transmission shaft; 26. Ring wall; 261. Flow hole; 3. Rotary drive device; 31. Motor bracket; 32. Coupling; 4. Vibration device; 5. Support and installation shell; 51. Shock-absorbing spring; 6. Rotating disk; 61. Mineral distribution trough; 611. Mineral feed port; 62. Clean water ring groove; 621. Clean water inlet; 63. Scraping structure. DETAILED DESCRIPTION

[0025] See also Figures 1 to 7As shown, according to an embodiment of the present invention, a sorting device for sorting according to mineral density is provided, comprising a shell 1, a sorting tank 2, a rotating disk 6, a rotating drive device 3, and a vibrating device 4, wherein the sorting tank 2 is in the cavity of the shell 1, the rotating drive device 3 is connected to the rotating disk 6 to drive the rotating disk 6 to rotate, the sorting tank 2 has a sorting ring groove 21, the vibrating device 4 is connected to the sorting tank 2 to drive the sorting tank 2 to vibrate, the rotating disk 6 is placed in the sorting tank 2, a mineral distribution tank 61 is constructed on the rotating disk 6, and the mineral distribution tank 61 has a mineral feeding port 611 corresponding to the sorting ring groove 21 (it should be pointed out that the mineral input into the mineral feeding port 611 is a solid-liquid two-phase system), and also comprises a clean water input pipe 12, through which clean water can be input into the sorting ring groove 21 to adjust the solid-liquid ratio of the solid-liquid two-phase system in the space of the sorting ring groove 21. In this technical solution, the vibration device 4 is used to vibrate the separation ring groove 21 on the separation tank 2 to achieve its vibration, and at the same time, the rotational movement of the rotation drive device 3 is combined to finally achieve the creation of a composite force field environment for the solid-liquid two-phase system. This composite force field includes gravity, buoyancy, pressure gradient force, velocity gradient force, Saffman force, Basset force, Bagnold shear force and other forces. Under the action of this composite force, the separation device for separation according to mineral density of the present invention can separate and sort difficult-to-separate minerals with very small density differences according to density differences, and finally achieve the purpose of separating wide particle sizes and large thicknesses of minerals according to density. Experiments have shown that the particle size range of the minerals separated by the separation device for separation according to mineral density of the present invention is 13 mm to 0.045 mm, and the thickness range is 50 mm to 500 mm. It should be particularly noted that in this technical solution, the rotating disk 6, on the one hand, can achieve uniform feeding to the sorting ring groove 21 during rotation through the mineral distribution groove 61 it has, and on the other hand, its rotation can be used to form efficient stirring for the solid-liquid two-phase system, thereby improving the fluidization degree of the solid-liquid two-phase system, which promotes each other with the composite force field, and effectively improves the sorting efficiency and sorting effect of the sorting device for sorting according to mineral density.

[0026] Optionally, the vibration frequency generated by the vibration device 4 is between 100 times / minute and 2000 times / minute; and / or the vibration amplitude generated by the vibration device 4 is between 0.5mm and 50mm. The vibration device 4 can, for example, adopt at least one of an exciter, a vibration motor, a reciprocating mechanism, a hydraulic mechanism, and a pneumatic mechanism.

[0027] The vibration mode of the vibration device 4 can be various, for example including but not limited to vertical linear vibration, vertical circular vibration, inclined linear vibration, inclined circular vibration, horizontal linear vibration, horizontal circular swing, horizontal circular vibration, and preferably, the vibration mode of the vibration device 4 is vertical vibration and / or horizontal vibration.

[0028] Optionally, the depth of the sorting annular groove 21 is H, 50mm≤H≤500mm, so that the material thickness range of the sorting device for sorting according to mineral density is 50mm~500mm, meeting the sorting requirements of thick-layer minerals. In a specific embodiment, H=280mm; and / or, and / or, the outer edge diameter of the sorting annular groove 21 is D, 1m≤D≤8m, in a specific embodiment, D=2m. The bottom shape of the sorting annular groove 21 can be one of a flat bottom, a conical bottom, and a flat-conical combined bottom, which is not particularly limited in the present invention. In some embodiments, the bottom surface of the rotary disk 6 facing the sorting tank 2 (that is, the upper side surface of the bottom wall of the sorting tank 2) is provided with a scraper structure 63, and the scraper structure 63 is in contact with the bottom surface of the sorting tank 2. When the rotary disk 6 rotates, the scraper structure 63 can transport the heavy products in the minerals in the sorting ring groove 21 inwardly along the radial direction of the sorting tank 2 and discharge them through the heavy product discharge port 23 located in the central area of ​​the sorting tank 2. It can be understood that the outer peripheral wall of the sorting ring groove 21 is provided with a light product discharge port 24. When the liquid level in the sorting ring groove 21 reaches a preset water level and the rotary disk 6 rotates, the light products in the minerals flow outwardly along the radial direction of the sorting tank 2 and are discharged through the light product discharge port 24. In this way, when the rotating disk 6 rotates, the water in the sorting ring groove 21 forms a radial horizontal flow and a circumferential rotating flow, so that the light products in the upper layer of the sorting ring groove 21 move toward the circumference of the sorting groove 2 (radially outward) and are discharged through the light product discharge port 24, and the heavy products in the lower layer of the sorting ring groove 21 move toward the heavy product discharge port 23 in the central area of ​​the sorting groove under the action of the scraper structure 63 and are discharged. The contamination between the light products and the heavy products caused by the same-direction transportation in the prior art is prevented by the reverse conveying / flow discharge of the light products and the heavy products.

[0029] In some embodiments, a plurality of concentrically arranged annular walls 26 are further provided between the side surface and the scraper structure 63, and a plurality of through-holes 261 penetrating the radial thickness of the annular walls 26 are provided on the annular walls 26. The plurality of concentrically arranged annular walls 26 can form a reliable support connection for the scraper structure 63, thereby ensuring that the scraper structure 63 has sufficient structural strength, and can more efficiently realize the reverse conveying and discharge of the heavy product and the light product. The setting of the through-holes 261 allows the light product in the radial center area to overflow toward the radial outside and pass through the light product. The discharge port 24 discharges the sorting annular groove 21 to achieve mineral sorting. At the same time, it can be understood that the scraping structure 63 and the setting of the annular wall 26 can also enrich the aforementioned composite force field when the rotating disk 6 rotates, thereby improving the sorting efficiency; in other embodiments, a flange (not shown in the figure) is also provided on the orifice of the through-flow hole 261, so that the lower side annular wall 26 of the rotating disk 6 objectively forms a plurality of concentric wind wheel structures, so as to enhance the disturbance of the solid-liquid two-phase system when the rotating disk 6 rotates, which can further improve the mineral sorting efficiency.

[0030] like Figure 5 As shown, as a specific embodiment of the scraper structure 63, the scraper structure 63 includes a plurality of scrapers, and the scrapers are guided and extended in a spiral shape from the edge of the rotating disk 6 toward the center. The scraper structure 63 with this structure can utilize the rotational power of the rotating disk 6 to transport the heavy products in the lower layer of the sorting ring groove 21 to the heavy product discharge port 23 in the central area of ​​the sorting groove and discharge them. There is no need to separately configure a corresponding discharge structure, which simplifies the structural design of the sorting device for sorting according to mineral density.

[0031] The rotary drive device 3 can adopt a hydraulic pump, an air pump, etc. that can provide circumferential rotational force. Preferably, the rotary drive device 3 is preferably a variable frequency motor, that is, it has a frequency converter to adjust the rotation speed (that is, frequency) of the rotary drive device 3 according to actual sorting requirements to adapt to different specific parameters such as different mineral types and particle sizes.

[0032] Optionally, a support and installation shell 5 is further connected to the shell 1, and the support and installation shell 5 is covered on the upper part of the rotating disk 6, and the light product discharge port 24 is formed between the support and installation shell 5 and the circumferential edge of the sorting tank 2. It can be understood that, while the light product discharge port 24 is formed between the top lip of the sorting tank 2 and the lower peripheral wall of the support and installation shell 5, the support and installation shell 5 can also be separated from the rotatable sorting tank 2 to prevent it from causing adverse interference to the rotation of the sorting tank 2.

[0033] Optionally, the mineral distribution trough 61 is an annular structure, which is arranged around the rotation axis of the rotating disk 6, and the mineral feed openings 611 are multiple, and the multiple mineral feed openings 611 are evenly spaced around the rotation axis of the rotating disk 6; and / or, the rotating disk 6 is also configured with a clean water annular groove 62, and the clean water annular groove 62 has a clean water inlet 621 corresponding to the separation annular groove 21. The supporting and mounting shell 5 is fixedly connected with a mineral feeding pipeline 11 and a clean water input pipeline 12, and the mineral distribution trough 61 is located on the discharge path of the mineral feeding pipeline 11, and the clean water annular groove 62 is located on the water outlet path of the clean water input pipeline 12. In this technical solution, by setting the mineral distribution trough 61 and the clean water annular groove 62, the mineral feeding pipeline 11 and the clean water input pipeline 12 in a fixed position can realize the feeding and water inlet in the full circumferential direction, so that the minerals entering the separation annular groove 21 are more evenly distributed.

[0034] Furthermore, the supporting and mounting shell 5 is connected to the outer shell 1 via a shock-absorbing spring 51 , and the shock-absorbing spring 51 can effectively block the transmission of vibration generated by the sorting device during operation to the outer shell 1 .

[0035] At this time, the mineral feeding pipe 11 and the clean water input pipe 12 are fixedly connected to the supporting and mounting shell 5. The outer shell 1 includes an upper cylinder 13, a lower cylinder 14, and a cover plate 15 detachably covering the top opening connected to the upper cylinder 13. This detachable structure can facilitate the assembly and maintenance process of the sorting device for sorting according to mineral density. The cover plate 15 is provided with a mineral feed box 16, and the mineral feed box 16 is connected to the sorting ring groove 21 through the mineral feeding pipe 11; and / or, the clean water input pipe 12 is connected to the cover plate 15 through the cover plate 15; and / or, the rotary drive device 3 is fixedly connected to the cover plate 15 through the motor bracket 31.

[0036] Optionally, the output shaft of the rotary drive device 3 is connected to the transmission shaft 25 of the sorting tank 2 through a coupling 32. The coupling 32 is preferably an elastic coupling, which can reduce the coaxiality assembly requirements between the rotary drive device 3 and the transmission shaft 25 and achieve compensation for shape and position errors.

[0037] like Figure 1As shown, a heavy product discharge channel 141 is constructed on the lower cylinder 14, and the heavy product discharge channel 141 is connected to the heavy product discharge port 23; a light product discharge channel 142 is constructed on the lower cylinder 14, and the light product discharge channel 142 is connected to the light product discharge port 24. It can be understood that the heavy product discharge channel 141 and the light product discharge channel 142 can be diverse in specific structural design, and their design is based on the basic premise of facilitating the collection of sorted minerals.

[0038] In some embodiments, the lower cylinder 14 is also constructed with an inspection port, to which an inspection baffle 143 is detachably connected. When the vibration device 4 fails and needs maintenance, maintenance personnel can open the inspection baffle 143 and enter the interior of the lower cylinder 14 to perform maintenance work.

[0039] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention. The above are only preferred embodiments of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A separation device for separation according to mineral density, characterized in that: The invention comprises a housing (1), a sorting trough (2), a rotating disk (6), a rotation driving device (3), and a vibration device (4), wherein the sorting trough (2) is located in a cavity of the housing (1), the rotation driving device (3) is connected to the rotating disk (6) to drive the rotating disk (6) to rotate, the sorting trough (2) has a sorting ring groove (21), the vibration device (4) is connected to the sorting trough (2) to drive the sorting trough (2) to vibrate, the rotating disk (6) is placed in the sorting trough (2), a mineral distribution trough (61) is constructed on the rotating disk (6), and the mineral distribution trough (61) has a mineral feed port (611) corresponding to the sorting ring groove (21), and further comprises a clean water input pipe (12), through which clean water can be input into the sorting ring groove (21) to adjust the solid-liquid two-phase system in the space of the sorting ring groove (21). liquid ratio; a scraper structure (63) is provided on the bottom surface of the rotary disk (6) facing the separation tank (2), the scraper structure (63) is in contact with the bottom surface of the separation tank (2), and when the rotary disk (6) rotates, the scraper structure (63) can transport the heavy products in the minerals in the separation ring groove (21) inwardly along the radial direction of the separation tank (2) and discharge them through the heavy product discharge port (23) located in the central area of ​​the separation tank (2); a plurality of concentrically arranged annular walls (26) are provided between the bottom surface of the separation tank (2) and the scraper structure (63), and a plurality of through-flow holes (261) are provided on the annular walls (26) penetrating the radial thickness thereof; and the scraper structure (63) includes a plurality of scrapers, and the scrapers are guided from the edge of the rotary disk (6) to the center and extend in a spiral shape; the vibration frequency generated by the vibration device (4) is between 100 times / minute and 2000 times / minute.

2. The separation device for separation according to mineral density according to claim 1, characterized in that: The vibration amplitude generated by the vibration device (4) is between 0.5 mm and 50 mm.

3. The separation device for separation according to mineral density according to claim 2, characterized in that: The vibration mode of the vibration device (4) is vertical vibration and / or horizontal vibration.

4. The separation device for separation according to mineral density according to claim 1, characterized in that: The groove depth of the separation annular groove (21) is H, 50 mm ≤ H ≤ 500 mm; and / or the outer edge diameter of the separation annular groove (21) is D, 1 m ≤ D ≤ 8 m.

5. The separation device for separation according to mineral density according to claim 1, characterized in that: The outer peripheral wall of the separation annular groove (21) is provided with a light product discharge port (24); when the liquid level in the separation annular groove (21) reaches a preset water level and the rotating disk (6) rotates, the light product in the mineral flows radially outwards along the separation groove (2) and is discharged through the light product discharge port (24).

6. The separation device for separation according to mineral density according to claim 5, characterized in that: A supporting and mounting shell (5) is also connected to the outer shell (1), and the supporting and mounting shell (5) is arranged to cover the upper part of the rotating disk (6), and the light product discharge port (24) is formed between the supporting and mounting shell (5) and the circumferential edge of the sorting tank (2).

7. The separation device for separation according to mineral density according to claim 6, characterized in that: The mineral distribution trough (61) is an annular structure, the annular structure is arranged around the rotation axis of the rotating disk (6), and there are multiple mineral inlets (611), and the multiple mineral inlets (611) are evenly spaced and arranged around the rotation axis of the rotating disk (6); and / or the rotating disk (6) is also provided with a clean water annular groove (62).

8. The separation device for separation according to mineral density according to claim 7, characterized in that: The supporting and mounting shell (5) is fixedly connected to a mineral feeding pipeline (11) and a clean water input pipeline (12); the mineral distribution trough (61) is located on a discharge path of the mineral feeding pipeline (11); and the clean water annular groove (62) is located on a water discharge path of the clean water input pipeline (12).

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